A new type of subterrene drill is then designed according to experiment data.Tests show that the new subterrene drill can reach the demand. 按所确定材料的实验性能设计了新式的热熔器，试验结果达到要求。
The practice of subterrene drilling indicates that this method not only adapts to geothermal well, but also is a new pipeless reinforcement method to be applied widely. 热熔钻进的实践证明，该方法不仅适用于地热钻井，而且也可以作为一种新的无套管护壁方法推广应用。
